Sealing-machine.



J. MACLAURIN.

SEALING MACHINE.

APPLICATION man :uLv 6,1915.

JOHN MACLAUBIN, 0F BROOKFIELD, MASSACHUSETTS.

SEgALING-MACHINE.

Specication of Letters Patent.

Patented Sept. 5, 1.916.

Application Med July 6, 1915. Serial No. 38,382. 1

To all whom it 'may concern.'

lie it known that I, Join' MACLAURIN, a subject of the King of England, residing at Brookfield, in the county of 'orcester and State of Massachusetts, have invented certain new and useful Improvements in Sealing-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

'lhis invention relates to sealing machines and to that class wherein the sealing tape is carried by and forms a. part of the machine.

An object of this invention is to provide a sealing machine using a roll of sealing tape in a capacity of a pressure roller.

A further object of this invention is a provision of a sealing machine having a roll of sealing tape to serve as a ressure roller and automatic means for moving the relative position of said roll of sealing tape with respect to said tape as the diameter of said roll decreases. i

A further object of this invention is a provision of an improved means for applying the sealing tape in such a manner that the sealing tape is fed from the machine and cut while in dry state.

Further objects will be apparent from the following specification, appended claims and drawings in which- Figure 1 is an isometric perspective view of a, machine of this type showing parts .thereof broken away for the sake of clearness, and Fig. 2 is a bottom view of the machine.

As it is necessary to provide an applying roller for a sealing machine, it is apparent that the roll of sealing tape may be used as the applying roller but rovision must he made for moving said roll of tape with respect to the frame as the diameter of said roll decreases when said tape is being used. The mounting and adjustment of a roll of sealing tape with respect to a frame forms the basis of this invention and to provide a complete machine, other details are combined therewith.

Referring to the drawings, there is shown a frame 10 having a handle 1l formed integral therewith, aml this frame is recessed as at 1'2 to receive a swinging frame 13 which is pivotally mounted in the forward end of the frame by having a trunnion 14 formed on each side of the forward end of said frame. This frame supports a shaft 15 .to which a roll of'sealing tape 1G is rigidly attached in any well known manner and this shaft also supports a ratchet wheel 17 which through coperation with the pawl 18 restricts the rotation of the shaft 15 and roll of paper 1G to one direction.

The frame 13 has the inside faces of the side members provided with guides 19 in which a yoke 20 is slidably mounted and this yoke supports a pressure roller 21 which is adapted to bear against the roll of tape 16 to control the iinwinding of the tape for application. The yoke 20 is normally advanced to cause the roller 21 to engage with the roll 16 by a compression spring 22 coiled about a stem 23 which extends from the yoke 20 through a portion of the frame 13.

The rear cross piece Q-l of the frame 13 has a spur Q5 formed thereon and this spur engages one or another of the notches formed in the rack 26. This rack is pivoted as at 27 to the frame and has a rearwardly extending arm 28 against which a compression spring 29 bears. The compression spring 29 has sutiicient strength to hold the rack 26 in engagement with the frame 13 to prevent movement of said frame when the machine is lifted or moved from place to place. When sutlicient paper has been unwoiind from the roll 16 to materially reduce its diameter, rollers 3() engage the paper and the lever 31 which supports the rollers 30 is swung on its fulcrum 32 to cause tne rack 33 pivotally carried by said lever to have one of its notches engage the spur 25 and thereby swing the frame 13 downwardly to cause the succeeding notch of the rack 26 to receive the spur 25. The rack 33 is normally held in engagement with the spur 25 as by a spring 34, and after the lever 31 has been swung to swing the frame, it is returned to a normal position as by a spring The frame 10 may be recessed as at 36 to receive the rollers 30.

As the tape is unwoiind from the roll 16 and pressure roller 21, the tape passes over a cross bar 37 from wher; it passes through the slot 38 where it is delivered upon the wrapper of a package. lVhen suilicient tape has been fed upon the wrapper, the end is severed as by a cutter 39 actuated b v the arm 40 connected to the rock shaft 41 to which a handle 42 is attached. The handle 42 rises to a convenient location with respcct tol tl'io-harullo l1 so that an operator may manipulatia cuttvr without removing lnshand from the salmgmaohlne.

The surface nponai'hich,thotapc ia fed is .tedv lirrcn'ith art` for illustrative pnrl'ioscs only.

Having thus described my invent-lori, l. claim:-

l. YIn a `sealing machine, an applying roller comprising a roll of tape to be applied, said roller boing rotatably mounted for rotation in on'odirction and means for \'ar \'ing tho'rlation .of'tlic mountingof said roller a5 thc tape comprising said rollcris consumed."

L. ln a gft-alilfigmachin@a tramo, an apply-ing rollor liioiabl'if 'jouri'ialdtherein, Said applying;A roller con ip risfnr o llol jscaling tap which 'iir'i'iso li of` smaller lianitcrsvand' moans for` antoinatic-alliif Inov-y ing said :ippljfiiig roller nith ibspt to said frame.- v

3. In ,a scaling niaqhn c ,A a frame, l:raupplcmcntal frame pivotod thai-im an applying roller jonrnalcd in Said Asupplemental frame, said applying roller comprsinga roll of scaling tape of which the diamctor (lecrcascs as the sa'li'ngltape corvnprisingr this roll conslln'ua'l, a [Wessurc roller nim-ably .carried by said supplemental .fl-anwr for cnsaid supplemental f'ramc,A aiack rarricd -bvl said frame for normally holdingsaid Sup pleinental frann in',a-"rclativclyl li'xvil position. a snpplcnintal rarkzlnovahly carried luy saii'lfral'no for impartingfmotion to said supplcmei-ital frame and n icanS .for imparting motion to said moving ratz-k.

In a scaling: machinaal frame, a sup# p'lemental framepivfod therein.l an applving roller journaicd in said l@uppicnwnfal' Jona' 'aladi-inin-N` 

